Promoo Welcome Offer can not be used with an other offer on site. At BritishGambler. Registration required. The free bets, once issued, are available for seven days, so be sure to use them before they expire. FREE BET VALID FOR 7 DAYS. See The Totesport Code. Many UK coddes offer betting bettiing codes you can use to unlock cores sports betting opportunities. Some bteting offer betging codes for free bets, while others feature a no deposit betexplorer sure win, and similar. In this review, you can find out all there is to know about sports betting bonus codes. To start with, many sportsbooks in the UK will require you to use their betting promo codes to claim the welcome bonus. However, you will also have to meet other qualifying requirements to get the bonus, such as making a qualifying first wager.